Unanswered: Change Grid Background Color

Seems like a simple request though I can't seem to find something that works. Is it possible to modify the background color of a cell or the cells in a column? I have seen some examples from prior releases to change the style of a cell though this doesn't seem to work properly. Is there a preferred / optimal approach to doing this?

The link had some information related to changing an entire row. I would actually like to change the background color for a column. The example below seems to work. The acceptable ways to create a renderer seems difficult to find in the documentation. In order words what are the acceptable parameters that can be passed to this function.